A kind of foamed polypropylene composite sheet and preparation method thereof

A foamed polypropylene and composite sheet technology, applied in the field of materials, can solve problems such as inability to achieve VOC, reduce VOC, and inability to know, and achieve the effects of avoiding collapse and shrinkage, increasing foaming ratio, and uniform raw materials

Active Publication Date: 2021-08-17
合肥森烨轻质塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent uses foamed polypropylene and polyvinyl chloride as the composite material, it does not involve the adjustment of the foamed polypropylene itself, and it is impossible to know how to reduce VOC, and the records of the examples only mention the composition of the composite material. Hydrogen sulfide gas pollution parameters, and due to the use of plasticizers and adhesives, VOC reduction cannot be achieved

Method used

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  • A kind of foamed polypropylene composite sheet and preparation method thereof
  • A kind of foamed polypropylene composite sheet and preparation method thereof
  • A kind of foamed polypropylene composite sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this embodiment, the following method and composition are used to prepare foamed polypropylene composite sheet:

[0051] (1) Stir the weighed attapulgite with an aspect ratio of 5:1 and a particle size of 30 μm and Lubote YY-502 at high speed for 10 minutes, then mix the weighed high melt strength polypropylene and EPS30R Propylene was added therein and stirred at a low speed for 5 minutes to obtain a special foaming material by extruding and granulating the mixture at 240°C. The weight ratios of each component in the special foaming material are respectively:

[0052]

[0053] (2) Add the special foaming material in step (1) into the supercritical foaming screw extruder, and accurately inject CO into the metering section 2 Liquid, control the injection amount to 3% of the special foaming material, the expansion ratio is 5, adjust the temperature of the extruder to 140°C, and adjust the pressure to 8.0MPa at the same time, so that the CO 2 It is in a supercritica...

Embodiment 2

[0059] In this embodiment, the following method and composition are used to prepare foamed polypropylene composite sheet:

[0060] (1) Stir the weighed attapulgite with an aspect ratio of 7:1 and a particle size of 10 μm and Lubote YY-702 at high speed for 5 minutes, then mix the weighed high melt strength polypropylene and EPS30R Propylene was added therein and stirred at a low speed for 3 minutes to obtain a special foaming material extruded and granulated at 220°C. The weight ratios of the components in the special foaming material were:

[0061]

[0062] (2) Add the special foaming material in step (1) into the supercritical foaming screw extruder, and accurately inject CO into the metering section 2 Liquid, the control injection amount is 3% of the special foaming material, the expansion ratio is 5 times, the temperature of the extruder is adjusted to 240°C, and the pressure is adjusted to 20MPa at the same time to make the 2 It is in a supercritical state. After temp...

Embodiment 3

[0069] In this embodiment, the following method and composition are used to prepare foamed polypropylene composite sheet:

[0070] (1) Stir the weighed wollastonite with an aspect ratio of 18:1 and a particle size of 50 μm, and hyperdispersants Lupertech YY-502 and YY-702 (ratio 1:3) at high speed for 10 minutes, then Add the weighed high-melt-strength polypropylene and EPS30R polypropylene into it and stir at a low speed for 5 minutes to obtain a special foaming material that is extruded and granulated at 230°C. The weight ratio of each component in the special foaming material is respectively for:

[0071]

[0072] (2) Add the special foaming material in step (1) into the supercritical foaming screw extruder, and accurately inject CO into the metering section 2 Liquid, the control injection amount is 0.3% of the special foaming material, the expansion ratio is 2, the temperature of the extruder is adjusted to 170°C, and the pressure is adjusted to 12.5MPa at the same tim...

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Abstract

The invention discloses a foamed polypropylene composite sheet and a preparation method thereof. The sheet sequentially comprises from the outside to the inside: a toughening layer, including a cross-linked foamed polypropylene composited with a thermoplastic elastomer or polyvinyl chloride on the surface. Propylene; reinforcement layer, including polyester / polyolefin / organic montmorillonite composite; core layer, including foam composite material with a foaming ratio of 2 to 5 times; the thickness of the composite sheet is 4 to 6mm, and the bending The modulus is 1100~1400MPa. The foamed polypropylene composite sheet provided by the present invention still maintains high bending strength during the process of increasing the expansion ratio, and due to the addition of inorganic particles with high specific surface area and high surface activity in the composite sheet, the product It has a certain adsorption capacity for harmful gases, realizes the purpose of reducing VOC release, and is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a foamed polypropylene composite sheet and a preparation method thereof. Background technique [0002] In recent years, with the development of polypropylene modified materials, its physical and mechanical properties and processing properties have been greatly improved, and it has been widely used in automotive interiors. Among them, the comprehensive performance of supercritical physical foamed polypropylene is higher than that of the currently commercialized PE / PS / PU foaming materials, and it is the preferred material for achieving environmental friendliness and performance assurance at the same time, and can replace PS / PE and some PU foaming materials Materials, used in the manufacture of packaging and mechanical parts, have great market development space and become a hot spot for the development of new functional plastics. [0003] However, the foamed polypropy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/36B32B27/20B32B27/32B32B7/12B32B27/30C08J9/12C08L67/02C08L23/12C08L91/06C08K3/34B29C48/08B29C65/50B29B9/06
CPCB29B9/06B32B5/18B32B7/12B32B27/065B32B27/20B32B27/304B32B27/32B32B27/36B32B2255/10B32B2255/26B32B2266/025B29C48/0021B29C48/08C08J9/0061C08J9/0066C08J9/122C08J2203/06C08J2203/08C08J2323/12C08J2423/12C08L67/02C08L2205/035C08L23/12C08L91/06C08L51/06C08K3/346
Inventor 王玲何顺涛何顺伦侯建鸣赵志刚
Owner 合肥森烨轻质塑料科技有限责任公司
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